Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/drivers/net/wireless/ath/wcn36xx/main.c

  1 /*
  2  * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
  3  *
  4  * Permission to use, copy, modify, and/or distribute this software for any
  5  * purpose with or without fee is hereby granted, provided that the above
  6  * copyright notice and this permission notice appear in all copies.
  7  *
  8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15  */
 16 
 17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 18 
 19 #include <linux/module.h>
 20 #include <linux/firmware.h>
 21 #include <linux/platform_device.h>
 22 #include "wcn36xx.h"
 23 
 24 unsigned int wcn36xx_dbg_mask;
 25 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
 26 MODULE_PARM_DESC(debug_mask, "Debugging mask");
 27 
 28 #define CHAN2G(_freq, _idx) { \
 29         .band = IEEE80211_BAND_2GHZ, \
 30         .center_freq = (_freq), \
 31         .hw_value = (_idx), \
 32         .max_power = 25, \
 33 }
 34 
 35 #define CHAN5G(_freq, _idx) { \
 36         .band = IEEE80211_BAND_5GHZ, \
 37         .center_freq = (_freq), \
 38         .hw_value = (_idx), \
 39         .max_power = 25, \
 40 }
 41 
 42 /* The wcn firmware expects channel values to matching
 43  * their mnemonic values. So use these for .hw_value. */
 44 static struct ieee80211_channel wcn_2ghz_channels[] = {
 45         CHAN2G(2412, 1), /* Channel 1 */
 46         CHAN2G(2417, 2), /* Channel 2 */
 47         CHAN2G(2422, 3), /* Channel 3 */
 48         CHAN2G(2427, 4), /* Channel 4 */
 49         CHAN2G(2432, 5), /* Channel 5 */
 50         CHAN2G(2437, 6), /* Channel 6 */
 51         CHAN2G(2442, 7), /* Channel 7 */
 52         CHAN2G(2447, 8), /* Channel 8 */
 53         CHAN2G(2452, 9), /* Channel 9 */
 54         CHAN2G(2457, 10), /* Channel 10 */
 55         CHAN2G(2462, 11), /* Channel 11 */
 56         CHAN2G(2467, 12), /* Channel 12 */
 57         CHAN2G(2472, 13), /* Channel 13 */
 58         CHAN2G(2484, 14)  /* Channel 14 */
 59 
 60 };
 61 
 62 static struct ieee80211_channel wcn_5ghz_channels[] = {
 63         CHAN5G(5180, 36),
 64         CHAN5G(5200, 40),
 65         CHAN5G(5220, 44),
 66         CHAN5G(5240, 48),
 67         CHAN5G(5260, 52),
 68         CHAN5G(5280, 56),
 69         CHAN5G(5300, 60),
 70         CHAN5G(5320, 64),
 71         CHAN5G(5500, 100),
 72         CHAN5G(5520, 104),
 73         CHAN5G(5540, 108),
 74         CHAN5G(5560, 112),
 75         CHAN5G(5580, 116),
 76         CHAN5G(5600, 120),
 77         CHAN5G(5620, 124),
 78         CHAN5G(5640, 128),
 79         CHAN5G(5660, 132),
 80         CHAN5G(5700, 140),
 81         CHAN5G(5745, 149),
 82         CHAN5G(5765, 153),
 83         CHAN5G(5785, 157),
 84         CHAN5G(5805, 161),
 85         CHAN5G(5825, 165)
 86 };
 87 
 88 #define RATE(_bitrate, _hw_rate, _flags) { \
 89         .bitrate        = (_bitrate),                   \
 90         .flags          = (_flags),                     \
 91         .hw_value       = (_hw_rate),                   \
 92         .hw_value_short = (_hw_rate)  \
 93 }
 94 
 95 static struct ieee80211_rate wcn_2ghz_rates[] = {
 96         RATE(10, HW_RATE_INDEX_1MBPS, 0),
 97         RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 98         RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 99         RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
100         RATE(60, HW_RATE_INDEX_6MBPS, 0),
101         RATE(90, HW_RATE_INDEX_9MBPS, 0),
102         RATE(120, HW_RATE_INDEX_12MBPS, 0),
103         RATE(180, HW_RATE_INDEX_18MBPS, 0),
104         RATE(240, HW_RATE_INDEX_24MBPS, 0),
105         RATE(360, HW_RATE_INDEX_36MBPS, 0),
106         RATE(480, HW_RATE_INDEX_48MBPS, 0),
107         RATE(540, HW_RATE_INDEX_54MBPS, 0)
108 };
109 
110 static struct ieee80211_rate wcn_5ghz_rates[] = {
111         RATE(60, HW_RATE_INDEX_6MBPS, 0),
112         RATE(90, HW_RATE_INDEX_9MBPS, 0),
113         RATE(120, HW_RATE_INDEX_12MBPS, 0),
114         RATE(180, HW_RATE_INDEX_18MBPS, 0),
115         RATE(240, HW_RATE_INDEX_24MBPS, 0),
116         RATE(360, HW_RATE_INDEX_36MBPS, 0),
117         RATE(480, HW_RATE_INDEX_48MBPS, 0),
118         RATE(540, HW_RATE_INDEX_54MBPS, 0)
119 };
120 
121 static struct ieee80211_supported_band wcn_band_2ghz = {
122         .channels       = wcn_2ghz_channels,
123         .n_channels     = ARRAY_SIZE(wcn_2ghz_channels),
124         .bitrates       = wcn_2ghz_rates,
125         .n_bitrates     = ARRAY_SIZE(wcn_2ghz_rates),
126         .ht_cap         = {
127                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
128                         IEEE80211_HT_CAP_SGI_20 |
129                         IEEE80211_HT_CAP_DSSSCCK40 |
130                         IEEE80211_HT_CAP_LSIG_TXOP_PROT,
131                 .ht_supported = true,
132                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
133                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
134                 .mcs = {
135                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
136                         .rx_highest = cpu_to_le16(72),
137                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
138                 }
139         }
140 };
141 
142 static struct ieee80211_supported_band wcn_band_5ghz = {
143         .channels       = wcn_5ghz_channels,
144         .n_channels     = ARRAY_SIZE(wcn_5ghz_channels),
145         .bitrates       = wcn_5ghz_rates,
146         .n_bitrates     = ARRAY_SIZE(wcn_5ghz_rates),
147         .ht_cap         = {
148                 .cap =  IEEE80211_HT_CAP_GRN_FLD |
149                         IEEE80211_HT_CAP_SGI_20 |
150                         IEEE80211_HT_CAP_DSSSCCK40 |
151                         IEEE80211_HT_CAP_LSIG_TXOP_PROT |
152                         IEEE80211_HT_CAP_SGI_40 |
153                         IEEE80211_HT_CAP_SUP_WIDTH_20_40,
154                 .ht_supported = true,
155                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
156                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
157                 .mcs = {
158                         .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
159                         .rx_highest = cpu_to_le16(72),
160                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
161                 }
162         }
163 };
164 
165 #ifdef CONFIG_PM
166 
167 static const struct wiphy_wowlan_support wowlan_support = {
168         .flags = WIPHY_WOWLAN_ANY
169 };
170 
171 #endif
172 
173 static inline u8 get_sta_index(struct ieee80211_vif *vif,
174                                struct wcn36xx_sta *sta_priv)
175 {
176         return NL80211_IFTYPE_STATION == vif->type ?
177                sta_priv->bss_sta_index :
178                sta_priv->sta_index;
179 }
180 
181 static const char * const wcn36xx_caps_names[] = {
182         "MCC",                          /* 0 */
183         "P2P",                          /* 1 */
184         "DOT11AC",                      /* 2 */
185         "SLM_SESSIONIZATION",           /* 3 */
186         "DOT11AC_OPMODE",               /* 4 */
187         "SAP32STA",                     /* 5 */
188         "TDLS",                         /* 6 */
189         "P2P_GO_NOA_DECOUPLE_INIT_SCAN",/* 7 */
190         "WLANACTIVE_OFFLOAD",           /* 8 */
191         "BEACON_OFFLOAD",               /* 9 */
192         "SCAN_OFFLOAD",                 /* 10 */
193         "ROAM_OFFLOAD",                 /* 11 */
194         "BCN_MISS_OFFLOAD",             /* 12 */
195         "STA_POWERSAVE",                /* 13 */
196         "STA_ADVANCED_PWRSAVE",         /* 14 */
197         "AP_UAPSD",                     /* 15 */
198         "AP_DFS",                       /* 16 */
199         "BLOCKACK",                     /* 17 */
200         "PHY_ERR",                      /* 18 */
201         "BCN_FILTER",                   /* 19 */
202         "RTT",                          /* 20 */
203         "RATECTRL",                     /* 21 */
204         "WOW"                           /* 22 */
205 };
206 
207 static const char *wcn36xx_get_cap_name(enum place_holder_in_cap_bitmap x)
208 {
209         if (x >= ARRAY_SIZE(wcn36xx_caps_names))
210                 return "UNKNOWN";
211         return wcn36xx_caps_names[x];
212 }
213 
214 static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
215 {
216         int i;
217 
218         for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
219                 if (get_feat_caps(wcn->fw_feat_caps, i))
220                         wcn36xx_info("FW Cap %s\n", wcn36xx_get_cap_name(i));
221         }
222 }
223 
224 static void wcn36xx_detect_chip_version(struct wcn36xx *wcn)
225 {
226         if (get_feat_caps(wcn->fw_feat_caps, DOT11AC)) {
227                 wcn36xx_info("Chip is 3680\n");
228                 wcn->chip_version = WCN36XX_CHIP_3680;
229         } else {
230                 wcn36xx_info("Chip is 3660\n");
231                 wcn->chip_version = WCN36XX_CHIP_3660;
232         }
233 }
234 
235 static int wcn36xx_start(struct ieee80211_hw *hw)
236 {
237         struct wcn36xx *wcn = hw->priv;
238         int ret;
239 
240         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
241 
242         /* SMD initialization */
243         ret = wcn36xx_smd_open(wcn);
244         if (ret) {
245                 wcn36xx_err("Failed to open smd channel: %d\n", ret);
246                 goto out_err;
247         }
248 
249         /* Allocate memory pools for Mgmt BD headers and Data BD headers */
250         ret = wcn36xx_dxe_allocate_mem_pools(wcn);
251         if (ret) {
252                 wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
253                 goto out_smd_close;
254         }
255 
256         ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
257         if (ret) {
258                 wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
259                 goto out_free_dxe_pool;
260         }
261 
262         wcn->hal_buf = kmalloc(WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
263         if (!wcn->hal_buf) {
264                 wcn36xx_err("Failed to allocate smd buf\n");
265                 ret = -ENOMEM;
266                 goto out_free_dxe_ctl;
267         }
268 
269         ret = wcn36xx_smd_load_nv(wcn);
270         if (ret) {
271                 wcn36xx_err("Failed to push NV to chip\n");
272                 goto out_free_smd_buf;
273         }
274 
275         ret = wcn36xx_smd_start(wcn);
276         if (ret) {
277                 wcn36xx_err("Failed to start chip\n");
278                 goto out_free_smd_buf;
279         }
280 
281         if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
282                 ret = wcn36xx_smd_feature_caps_exchange(wcn);
283                 if (ret)
284                         wcn36xx_warn("Exchange feature caps failed\n");
285                 else
286                         wcn36xx_feat_caps_info(wcn);
287         }
288 
289         wcn36xx_detect_chip_version(wcn);
290 
291         /* DMA channel initialization */
292         ret = wcn36xx_dxe_init(wcn);
293         if (ret) {
294                 wcn36xx_err("DXE init failed\n");
295                 goto out_smd_stop;
296         }
297 
298         wcn36xx_debugfs_init(wcn);
299 
300         INIT_LIST_HEAD(&wcn->vif_list);
301         return 0;
302 
303 out_smd_stop:
304         wcn36xx_smd_stop(wcn);
305 out_free_smd_buf:
306         kfree(wcn->hal_buf);
307 out_free_dxe_pool:
308         wcn36xx_dxe_free_mem_pools(wcn);
309 out_free_dxe_ctl:
310         wcn36xx_dxe_free_ctl_blks(wcn);
311 out_smd_close:
312         wcn36xx_smd_close(wcn);
313 out_err:
314         return ret;
315 }
316 
317 static void wcn36xx_stop(struct ieee80211_hw *hw)
318 {
319         struct wcn36xx *wcn = hw->priv;
320 
321         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
322 
323         wcn36xx_debugfs_exit(wcn);
324         wcn36xx_smd_stop(wcn);
325         wcn36xx_dxe_deinit(wcn);
326         wcn36xx_smd_close(wcn);
327 
328         wcn36xx_dxe_free_mem_pools(wcn);
329         wcn36xx_dxe_free_ctl_blks(wcn);
330 
331         kfree(wcn->hal_buf);
332 }
333 
334 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
335 {
336         struct wcn36xx *wcn = hw->priv;
337         struct ieee80211_vif *vif = NULL;
338         struct wcn36xx_vif *tmp;
339 
340         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
341 
342         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
343                 int ch = WCN36XX_HW_CHANNEL(wcn);
344                 wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
345                             ch);
346                 list_for_each_entry(tmp, &wcn->vif_list, list) {
347                         vif = container_of((void *)tmp,
348                                            struct ieee80211_vif,
349                                            drv_priv);
350                         wcn36xx_smd_switch_channel(wcn, vif, ch);
351                 }
352         }
353 
354         return 0;
355 }
356 
357 #define WCN36XX_SUPPORTED_FILTERS (0)
358 
359 static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
360                                      unsigned int changed,
361                                      unsigned int *total, u64 multicast)
362 {
363         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
364 
365         *total &= WCN36XX_SUPPORTED_FILTERS;
366 }
367 
368 static void wcn36xx_tx(struct ieee80211_hw *hw,
369                        struct ieee80211_tx_control *control,
370                        struct sk_buff *skb)
371 {
372         struct wcn36xx *wcn = hw->priv;
373         struct wcn36xx_sta *sta_priv = NULL;
374 
375         if (control->sta)
376                 sta_priv = (struct wcn36xx_sta *)control->sta->drv_priv;
377 
378         if (wcn36xx_start_tx(wcn, sta_priv, skb))
379                 ieee80211_free_txskb(wcn->hw, skb);
380 }
381 
382 static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
383                            struct ieee80211_vif *vif,
384                            struct ieee80211_sta *sta,
385                            struct ieee80211_key_conf *key_conf)
386 {
387         struct wcn36xx *wcn = hw->priv;
388         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
389         struct wcn36xx_sta *sta_priv = vif_priv->sta;
390         int ret = 0;
391         u8 key[WLAN_MAX_KEY_LEN];
392 
393         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
394         wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
395                     cmd, key_conf->cipher, key_conf->keyidx,
396                     key_conf->keylen, key_conf->flags);
397         wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
398                          key_conf->key,
399                          key_conf->keylen);
400 
401         switch (key_conf->cipher) {
402         case WLAN_CIPHER_SUITE_WEP40:
403                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
404                 break;
405         case WLAN_CIPHER_SUITE_WEP104:
406                 vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
407                 break;
408         case WLAN_CIPHER_SUITE_CCMP:
409                 vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
410                 break;
411         case WLAN_CIPHER_SUITE_TKIP:
412                 vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
413                 break;
414         default:
415                 wcn36xx_err("Unsupported key type 0x%x\n",
416                               key_conf->cipher);
417                 ret = -EOPNOTSUPP;
418                 goto out;
419         }
420 
421         switch (cmd) {
422         case SET_KEY:
423                 if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
424                         /*
425                          * Supplicant is sending key in the wrong order:
426                          * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
427                          * but HW expects it to be in the order as described in
428                          * IEEE 802.11 spec (see chapter 11.7) like this:
429                          * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
430                          */
431                         memcpy(key, key_conf->key, 16);
432                         memcpy(key + 16, key_conf->key + 24, 8);
433                         memcpy(key + 24, key_conf->key + 16, 8);
434                 } else {
435                         memcpy(key, key_conf->key, key_conf->keylen);
436                 }
437 
438                 if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
439                         sta_priv->is_data_encrypted = true;
440                         /* Reconfigure bss with encrypt_type */
441                         if (NL80211_IFTYPE_STATION == vif->type)
442                                 wcn36xx_smd_config_bss(wcn,
443                                                        vif,
444                                                        sta,
445                                                        sta->addr,
446                                                        true);
447 
448                         wcn36xx_smd_set_stakey(wcn,
449                                 vif_priv->encrypt_type,
450                                 key_conf->keyidx,
451                                 key_conf->keylen,
452                                 key,
453                                 get_sta_index(vif, sta_priv));
454                 } else {
455                         wcn36xx_smd_set_bsskey(wcn,
456                                 vif_priv->encrypt_type,
457                                 key_conf->keyidx,
458                                 key_conf->keylen,
459                                 key);
460                         if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
461                             (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
462                                 sta_priv->is_data_encrypted = true;
463                                 wcn36xx_smd_set_stakey(wcn,
464                                         vif_priv->encrypt_type,
465                                         key_conf->keyidx,
466                                         key_conf->keylen,
467                                         key,
468                                         get_sta_index(vif, sta_priv));
469                         }
470                 }
471                 break;
472         case DISABLE_KEY:
473                 if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
474                         wcn36xx_smd_remove_bsskey(wcn,
475                                 vif_priv->encrypt_type,
476                                 key_conf->keyidx);
477                 } else {
478                         sta_priv->is_data_encrypted = false;
479                         /* do not remove key if disassociated */
480                         if (sta_priv->aid)
481                                 wcn36xx_smd_remove_stakey(wcn,
482                                         vif_priv->encrypt_type,
483                                         key_conf->keyidx,
484                                         get_sta_index(vif, sta_priv));
485                 }
486                 break;
487         default:
488                 wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
489                 ret = -EOPNOTSUPP;
490                 goto out;
491         }
492 
493 out:
494         return ret;
495 }
496 
497 static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw)
498 {
499         struct wcn36xx *wcn = hw->priv;
500 
501         wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN);
502         wcn36xx_smd_start_scan(wcn);
503 }
504 
505 static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw)
506 {
507         struct wcn36xx *wcn = hw->priv;
508 
509         wcn36xx_smd_end_scan(wcn);
510         wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN);
511 }
512 
513 static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
514                                          enum ieee80211_band band)
515 {
516         int i, size;
517         u16 *rates_table;
518         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
519         u32 rates = sta->supp_rates[band];
520 
521         memset(&sta_priv->supported_rates, 0,
522                 sizeof(sta_priv->supported_rates));
523         sta_priv->supported_rates.op_rate_mode = STA_11n;
524 
525         size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
526         rates_table = sta_priv->supported_rates.dsss_rates;
527         if (band == IEEE80211_BAND_2GHZ) {
528                 for (i = 0; i < size; i++) {
529                         if (rates & 0x01) {
530                                 rates_table[i] = wcn_2ghz_rates[i].hw_value;
531                                 rates = rates >> 1;
532                         }
533                 }
534         }
535 
536         size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
537         rates_table = sta_priv->supported_rates.ofdm_rates;
538         for (i = 0; i < size; i++) {
539                 if (rates & 0x01) {
540                         rates_table[i] = wcn_5ghz_rates[i].hw_value;
541                         rates = rates >> 1;
542                 }
543         }
544 
545         if (sta->ht_cap.ht_supported) {
546                 BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
547                         sizeof(sta_priv->supported_rates.supported_mcs_set));
548                 memcpy(sta_priv->supported_rates.supported_mcs_set,
549                        sta->ht_cap.mcs.rx_mask,
550                        sizeof(sta->ht_cap.mcs.rx_mask));
551         }
552 }
553 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
554 {
555         u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
556                 HW_RATE_INDEX_6MBPS,
557                 HW_RATE_INDEX_9MBPS,
558                 HW_RATE_INDEX_12MBPS,
559                 HW_RATE_INDEX_18MBPS,
560                 HW_RATE_INDEX_24MBPS,
561                 HW_RATE_INDEX_36MBPS,
562                 HW_RATE_INDEX_48MBPS,
563                 HW_RATE_INDEX_54MBPS
564         };
565         u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
566                 HW_RATE_INDEX_1MBPS,
567                 HW_RATE_INDEX_2MBPS,
568                 HW_RATE_INDEX_5_5MBPS,
569                 HW_RATE_INDEX_11MBPS
570         };
571 
572         rates->op_rate_mode = STA_11n;
573         memcpy(rates->dsss_rates, dsss_rates,
574                 sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
575         memcpy(rates->ofdm_rates, ofdm_rates,
576                 sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
577         rates->supported_mcs_set[0] = 0xFF;
578 }
579 static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
580                                      struct ieee80211_vif *vif,
581                                      struct ieee80211_bss_conf *bss_conf,
582                                      u32 changed)
583 {
584         struct wcn36xx *wcn = hw->priv;
585         struct sk_buff *skb = NULL;
586         u16 tim_off, tim_len;
587         enum wcn36xx_hal_link_state link_state;
588         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
589 
590         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
591                     vif, changed);
592 
593         if (changed & BSS_CHANGED_BEACON_INFO) {
594                 wcn36xx_dbg(WCN36XX_DBG_MAC,
595                             "mac bss changed dtim period %d\n",
596                             bss_conf->dtim_period);
597 
598                 vif_priv->dtim_period = bss_conf->dtim_period;
599         }
600 
601         if (changed & BSS_CHANGED_PS) {
602                 wcn36xx_dbg(WCN36XX_DBG_MAC,
603                             "mac bss PS set %d\n",
604                             bss_conf->ps);
605                 if (bss_conf->ps) {
606                         wcn36xx_pmc_enter_bmps_state(wcn, vif);
607                 } else {
608                         wcn36xx_pmc_exit_bmps_state(wcn, vif);
609                 }
610         }
611 
612         if (changed & BSS_CHANGED_BSSID) {
613                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
614                             bss_conf->bssid);
615 
616                 if (!is_zero_ether_addr(bss_conf->bssid)) {
617                         vif_priv->is_joining = true;
618                         vif_priv->bss_index = 0xff;
619                         wcn36xx_smd_join(wcn, bss_conf->bssid,
620                                          vif->addr, WCN36XX_HW_CHANNEL(wcn));
621                         wcn36xx_smd_config_bss(wcn, vif, NULL,
622                                                bss_conf->bssid, false);
623                 } else {
624                         vif_priv->is_joining = false;
625                         wcn36xx_smd_delete_bss(wcn, vif);
626                 }
627         }
628 
629         if (changed & BSS_CHANGED_SSID) {
630                 wcn36xx_dbg(WCN36XX_DBG_MAC,
631                             "mac bss changed ssid\n");
632                 wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
633                                  bss_conf->ssid, bss_conf->ssid_len);
634 
635                 vif_priv->ssid.length = bss_conf->ssid_len;
636                 memcpy(&vif_priv->ssid.ssid,
637                        bss_conf->ssid,
638                        bss_conf->ssid_len);
639         }
640 
641         if (changed & BSS_CHANGED_ASSOC) {
642                 vif_priv->is_joining = false;
643                 if (bss_conf->assoc) {
644                         struct ieee80211_sta *sta;
645                         struct wcn36xx_sta *sta_priv;
646 
647                         wcn36xx_dbg(WCN36XX_DBG_MAC,
648                                     "mac assoc bss %pM vif %pM AID=%d\n",
649                                      bss_conf->bssid,
650                                      vif->addr,
651                                      bss_conf->aid);
652 
653                         rcu_read_lock();
654                         sta = ieee80211_find_sta(vif, bss_conf->bssid);
655                         if (!sta) {
656                                 wcn36xx_err("sta %pM is not found\n",
657                                               bss_conf->bssid);
658                                 rcu_read_unlock();
659                                 goto out;
660                         }
661                         sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
662 
663                         wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
664 
665                         wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
666                                 vif->addr,
667                                 WCN36XX_HAL_LINK_POSTASSOC_STATE);
668                         wcn36xx_smd_config_bss(wcn, vif, sta,
669                                                bss_conf->bssid,
670                                                true);
671                         sta_priv->aid = bss_conf->aid;
672                         /*
673                          * config_sta must be called from  because this is the
674                          * place where AID is available.
675                          */
676                         wcn36xx_smd_config_sta(wcn, vif, sta);
677                         rcu_read_unlock();
678                 } else {
679                         wcn36xx_dbg(WCN36XX_DBG_MAC,
680                                     "disassociated bss %pM vif %pM AID=%d\n",
681                                     bss_conf->bssid,
682                                     vif->addr,
683                                     bss_conf->aid);
684                         wcn36xx_smd_set_link_st(wcn,
685                                                 bss_conf->bssid,
686                                                 vif->addr,
687                                                 WCN36XX_HAL_LINK_IDLE_STATE);
688                 }
689         }
690 
691         if (changed & BSS_CHANGED_AP_PROBE_RESP) {
692                 wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
693                 skb = ieee80211_proberesp_get(hw, vif);
694                 if (!skb) {
695                         wcn36xx_err("failed to alloc probereq skb\n");
696                         goto out;
697                 }
698 
699                 wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
700                 dev_kfree_skb(skb);
701         }
702 
703         if (changed & BSS_CHANGED_BEACON_ENABLED ||
704             changed & BSS_CHANGED_BEACON) {
705                 wcn36xx_dbg(WCN36XX_DBG_MAC,
706                             "mac bss changed beacon enabled %d\n",
707                             bss_conf->enable_beacon);
708 
709                 if (bss_conf->enable_beacon) {
710                         vif_priv->dtim_period = bss_conf->dtim_period;
711                         vif_priv->bss_index = 0xff;
712                         wcn36xx_smd_config_bss(wcn, vif, NULL,
713                                                vif->addr, false);
714                         skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
715                                                        &tim_len);
716                         if (!skb) {
717                                 wcn36xx_err("failed to alloc beacon skb\n");
718                                 goto out;
719                         }
720                         wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
721                         dev_kfree_skb(skb);
722 
723                         if (vif->type == NL80211_IFTYPE_ADHOC ||
724                             vif->type == NL80211_IFTYPE_MESH_POINT)
725                                 link_state = WCN36XX_HAL_LINK_IBSS_STATE;
726                         else
727                                 link_state = WCN36XX_HAL_LINK_AP_STATE;
728 
729                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
730                                                 link_state);
731                 } else {
732                         wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
733                                                 WCN36XX_HAL_LINK_IDLE_STATE);
734                         wcn36xx_smd_delete_bss(wcn, vif);
735                 }
736         }
737 out:
738         return;
739 }
740 
741 /* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
742 static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
743 {
744         struct wcn36xx *wcn = hw->priv;
745         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
746 
747         wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
748         return 0;
749 }
750 
751 static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
752                                      struct ieee80211_vif *vif)
753 {
754         struct wcn36xx *wcn = hw->priv;
755         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
756         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
757 
758         list_del(&vif_priv->list);
759         wcn36xx_smd_delete_sta_self(wcn, vif->addr);
760 }
761 
762 static int wcn36xx_add_interface(struct ieee80211_hw *hw,
763                                  struct ieee80211_vif *vif)
764 {
765         struct wcn36xx *wcn = hw->priv;
766         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
767 
768         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
769                     vif, vif->type);
770 
771         if (!(NL80211_IFTYPE_STATION == vif->type ||
772               NL80211_IFTYPE_AP == vif->type ||
773               NL80211_IFTYPE_ADHOC == vif->type ||
774               NL80211_IFTYPE_MESH_POINT == vif->type)) {
775                 wcn36xx_warn("Unsupported interface type requested: %d\n",
776                              vif->type);
777                 return -EOPNOTSUPP;
778         }
779 
780         list_add(&vif_priv->list, &wcn->vif_list);
781         wcn36xx_smd_add_sta_self(wcn, vif);
782 
783         return 0;
784 }
785 
786 static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
787                            struct ieee80211_sta *sta)
788 {
789         struct wcn36xx *wcn = hw->priv;
790         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
791         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
792         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
793                     vif, sta->addr);
794 
795         vif_priv->sta = sta_priv;
796         sta_priv->vif = vif_priv;
797         /*
798          * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
799          * at this stage AID is not available yet.
800          */
801         if (NL80211_IFTYPE_STATION != vif->type) {
802                 wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
803                 sta_priv->aid = sta->aid;
804                 wcn36xx_smd_config_sta(wcn, vif, sta);
805         }
806         return 0;
807 }
808 
809 static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
810                               struct ieee80211_vif *vif,
811                               struct ieee80211_sta *sta)
812 {
813         struct wcn36xx *wcn = hw->priv;
814         struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
815         struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
816 
817         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
818                     vif, sta->addr, sta_priv->sta_index);
819 
820         wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
821         vif_priv->sta = NULL;
822         sta_priv->vif = NULL;
823         return 0;
824 }
825 
826 #ifdef CONFIG_PM
827 
828 static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
829 {
830         struct wcn36xx *wcn = hw->priv;
831 
832         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
833 
834         flush_workqueue(wcn->hal_ind_wq);
835         wcn36xx_smd_set_power_params(wcn, true);
836         return 0;
837 }
838 
839 static int wcn36xx_resume(struct ieee80211_hw *hw)
840 {
841         struct wcn36xx *wcn = hw->priv;
842 
843         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
844 
845         flush_workqueue(wcn->hal_ind_wq);
846         wcn36xx_smd_set_power_params(wcn, false);
847         return 0;
848 }
849 
850 #endif
851 
852 static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
853                     struct ieee80211_vif *vif,
854                     enum ieee80211_ampdu_mlme_action action,
855                     struct ieee80211_sta *sta, u16 tid, u16 *ssn,
856                     u8 buf_size)
857 {
858         struct wcn36xx *wcn = hw->priv;
859         struct wcn36xx_sta *sta_priv = NULL;
860 
861         wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
862                     action, tid);
863 
864         sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
865 
866         switch (action) {
867         case IEEE80211_AMPDU_RX_START:
868                 sta_priv->tid = tid;
869                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
870                         get_sta_index(vif, sta_priv));
871                 wcn36xx_smd_add_ba(wcn);
872                 wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
873                 ieee80211_start_tx_ba_session(sta, tid, 0);
874                 break;
875         case IEEE80211_AMPDU_RX_STOP:
876                 wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
877                 break;
878         case IEEE80211_AMPDU_TX_START:
879                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
880                 break;
881         case IEEE80211_AMPDU_TX_OPERATIONAL:
882                 wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
883                         get_sta_index(vif, sta_priv));
884                 break;
885         case IEEE80211_AMPDU_TX_STOP_FLUSH:
886         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
887         case IEEE80211_AMPDU_TX_STOP_CONT:
888                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
889                 break;
890         default:
891                 wcn36xx_err("Unknown AMPDU action\n");
892         }
893 
894         return 0;
895 }
896 
897 static const struct ieee80211_ops wcn36xx_ops = {
898         .start                  = wcn36xx_start,
899         .stop                   = wcn36xx_stop,
900         .add_interface          = wcn36xx_add_interface,
901         .remove_interface       = wcn36xx_remove_interface,
902 #ifdef CONFIG_PM
903         .suspend                = wcn36xx_suspend,
904         .resume                 = wcn36xx_resume,
905 #endif
906         .config                 = wcn36xx_config,
907         .configure_filter       = wcn36xx_configure_filter,
908         .tx                     = wcn36xx_tx,
909         .set_key                = wcn36xx_set_key,
910         .sw_scan_start          = wcn36xx_sw_scan_start,
911         .sw_scan_complete       = wcn36xx_sw_scan_complete,
912         .bss_info_changed       = wcn36xx_bss_info_changed,
913         .set_rts_threshold      = wcn36xx_set_rts_threshold,
914         .sta_add                = wcn36xx_sta_add,
915         .sta_remove             = wcn36xx_sta_remove,
916         .ampdu_action           = wcn36xx_ampdu_action,
917 };
918 
919 static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
920 {
921         int ret = 0;
922 
923         static const u32 cipher_suites[] = {
924                 WLAN_CIPHER_SUITE_WEP40,
925                 WLAN_CIPHER_SUITE_WEP104,
926                 WLAN_CIPHER_SUITE_TKIP,
927                 WLAN_CIPHER_SUITE_CCMP,
928         };
929 
930         wcn->hw->flags = IEEE80211_HW_SIGNAL_DBM |
931                 IEEE80211_HW_HAS_RATE_CONTROL |
932                 IEEE80211_HW_SUPPORTS_PS |
933                 IEEE80211_HW_CONNECTION_MONITOR |
934                 IEEE80211_HW_AMPDU_AGGREGATION |
935                 IEEE80211_HW_TIMING_BEACON_ONLY;
936 
937         wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
938                 BIT(NL80211_IFTYPE_AP) |
939                 BIT(NL80211_IFTYPE_ADHOC) |
940                 BIT(NL80211_IFTYPE_MESH_POINT);
941 
942         wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
943         wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
944 
945         wcn->hw->wiphy->cipher_suites = cipher_suites;
946         wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
947 
948         wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
949 
950 #ifdef CONFIG_PM
951         wcn->hw->wiphy->wowlan = &wowlan_support;
952 #endif
953 
954         wcn->hw->max_listen_interval = 200;
955 
956         wcn->hw->queues = 4;
957 
958         SET_IEEE80211_DEV(wcn->hw, wcn->dev);
959 
960         wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
961         wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
962 
963         return ret;
964 }
965 
966 static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
967                                           struct platform_device *pdev)
968 {
969         struct resource *res;
970         /* Set TX IRQ */
971         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
972                                            "wcnss_wlantx_irq");
973         if (!res) {
974                 wcn36xx_err("failed to get tx_irq\n");
975                 return -ENOENT;
976         }
977         wcn->tx_irq = res->start;
978 
979         /* Set RX IRQ */
980         res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
981                                            "wcnss_wlanrx_irq");
982         if (!res) {
983                 wcn36xx_err("failed to get rx_irq\n");
984                 return -ENOENT;
985         }
986         wcn->rx_irq = res->start;
987 
988         /* Map the memory */
989         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
990                                                  "wcnss_mmio");
991         if (!res) {
992                 wcn36xx_err("failed to get mmio\n");
993                 return -ENOENT;
994         }
995         wcn->mmio = ioremap(res->start, resource_size(res));
996         if (!wcn->mmio) {
997                 wcn36xx_err("failed to map io memory\n");
998                 return -ENOMEM;
999         }
1000         return 0;
1001 }
1002 
1003 static int wcn36xx_probe(struct platform_device *pdev)
1004 {
1005         struct ieee80211_hw *hw;
1006         struct wcn36xx *wcn;
1007         int ret;
1008         u8 addr[ETH_ALEN];
1009 
1010         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1011 
1012         hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1013         if (!hw) {
1014                 wcn36xx_err("failed to alloc hw\n");
1015                 ret = -ENOMEM;
1016                 goto out_err;
1017         }
1018         platform_set_drvdata(pdev, hw);
1019         wcn = hw->priv;
1020         wcn->hw = hw;
1021         wcn->dev = &pdev->dev;
1022         wcn->ctrl_ops = pdev->dev.platform_data;
1023 
1024         mutex_init(&wcn->hal_mutex);
1025 
1026         if (!wcn->ctrl_ops->get_hw_mac(addr)) {
1027                 wcn36xx_info("mac address: %pM\n", addr);
1028                 SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1029         }
1030 
1031         ret = wcn36xx_platform_get_resources(wcn, pdev);
1032         if (ret)
1033                 goto out_wq;
1034 
1035         wcn36xx_init_ieee80211(wcn);
1036         ret = ieee80211_register_hw(wcn->hw);
1037         if (ret)
1038                 goto out_unmap;
1039 
1040         return 0;
1041 
1042 out_unmap:
1043         iounmap(wcn->mmio);
1044 out_wq:
1045         ieee80211_free_hw(hw);
1046 out_err:
1047         return ret;
1048 }
1049 static int wcn36xx_remove(struct platform_device *pdev)
1050 {
1051         struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1052         struct wcn36xx *wcn = hw->priv;
1053         wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1054 
1055         release_firmware(wcn->nv);
1056         mutex_destroy(&wcn->hal_mutex);
1057 
1058         ieee80211_unregister_hw(hw);
1059         iounmap(wcn->mmio);
1060         ieee80211_free_hw(hw);
1061 
1062         return 0;
1063 }
1064 static const struct platform_device_id wcn36xx_platform_id_table[] = {
1065         {
1066                 .name = "wcn36xx",
1067                 .driver_data = 0
1068         },
1069         {}
1070 };
1071 MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table);
1072 
1073 static struct platform_driver wcn36xx_driver = {
1074         .probe      = wcn36xx_probe,
1075         .remove     = wcn36xx_remove,
1076         .driver         = {
1077                 .name   = "wcn36xx",
1078                 .owner  = THIS_MODULE,
1079         },
1080         .id_table    = wcn36xx_platform_id_table,
1081 };
1082 
1083 static int __init wcn36xx_init(void)
1084 {
1085         platform_driver_register(&wcn36xx_driver);
1086         return 0;
1087 }
1088 module_init(wcn36xx_init);
1089 
1090 static void __exit wcn36xx_exit(void)
1091 {
1092         platform_driver_unregister(&wcn36xx_driver);
1093 }
1094 module_exit(wcn36xx_exit);
1095 
1096 MODULE_LICENSE("Dual BSD/GPL");
1097 MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1098 MODULE_FIRMWARE(WLAN_NV_FILE);
1099 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us